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胃液误吸是临床麻醉及急、危、重症病人中常见的并发症，它可导致严重的肺损伤甚至ＡＲＤＳ，肺表面活性物质（ｐｕｌｍｏｎａｒｙｓｕｒｆａｃｔａｎｔ，ＰＳ）系统紊乱可能是胃液误吸后呼吸衰竭发展的一个重要因素，已有研究证实外源性ＰＳ对盐酸吸入性肺损伤具有治疗作用。?
Gastric aspiration is a common complication of clinical anesthesia and acute, critically ill and critically ill patients and can cause severe lung injury. Even ARDS and pulmonarysurfactant (PS) system disorders may be responsible for the development of respiratory failure after aspiration of gastric juice An important factor, studies have confirmed that exogenous PS has a therapeutic effect on inhaled lung injury caused by hydrochloric acid. ?